Re: [Ace] [Technical Errata Reported] RFC8392 (5710)

Felipe Gasper <felipe@felipegasper.com> Mon, 29 April 2019 16:04 UTC

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From: Felipe Gasper <felipe@felipegasper.com>
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Date: Mon, 29 Apr 2019 12:03:57 -0400
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To: Benjamin Kaduk <kaduk@mit.edu>
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Subject: Re: [Ace] [Technical Errata Reported] RFC8392 (5710)
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> On Apr 29, 2019, at 12:00 PM, Benjamin Kaduk <kaduk@mit.edu> wrote:
> 
> On Mon, Apr 29, 2019 at 08:55:53AM -0700, RFC Errata System wrote:
>> The following errata report has been submitted for RFC8392,
>> "CBOR Web Token (CWT)".
>> 
>> --------------------------------------
>> You may review the report below and at:
>> http://www.rfc-editor.org/errata/eid5710
>> 
>> --------------------------------------
>> Type: Technical
>> Reported by: Felipe Gasper <felipe@felipegasper.com>
>> 
>> Section: 1.1
>> 
>> Original Text
>> -------------
>> In JSON, maps are called objects and only have one kind of map key: a
>>   string.  CBOR uses strings, negative integers, and unsigned integers
>>   as map keys.
>> 
>> Corrected Text
>> --------------
>> In JSON, maps are called objects and only have one kind of map key:
>> a string.  CBOR allows other data types, such as strings, negative
>> integers, and unsigned integers, as map keys.
>> 
>> Notes
>> -----
>> The text as it stands risks an interpretation that CBOR limits map keys to integers and strings; per discussion on the CBOR mailing list, this is not the case.
> 
> I see the CBOR list traffic in the archive (e.g.,
> https://mailarchive.ietf.org/arch/msg/cbor/LyndIfQipxUfx0cu6nlOwi6ceOY) and
> agree with the sentiment that the CWT spec should not inadvertently
> over-specify the behavior of CBOR
> 
> The proposed new text is itself flawed, though, as it claims that strings
> are an "other data type" with respect to strings.

Ah, agreed. Is there a way I can update my proposed phrase? The editor only seems to allow submission of a new erratum.

It may be worth disambiguating between binary and UTF-8 strings, too; JSON only allows UTF-8 strings, while CBOR also allows binary.

-F